Drain-tile molder.



0. POULSON. DRAIN TlLE MOLDER.

APPLICATION FILED FEB. 4, 19L).

1,144,863. Patented June 29, 1915.

2 SHEETS-SHEET I.

I8 28 as i 6, o J o I l r 2er 2| 24 2| WITNESSES: INVENTOR MA? W26 i Oluff Poulson '5 A TTORNEY THE NORRIS PETERS co, FHOTCYLITHO, WASHINGTON, D. c,

O. POULSON.

, DRAIN TILE MOL'DER. APPLICATION FILED FEB. 4. 1915.

Patented June 29, 1915.

2 SHEETS-SHEET 2.

IIVVE/VTOR Oluff Poulson W/ T/VESSES:

A TTOR/VEY THE NORRIS PETERS 60.. FHOTO-LITHQ. WASHINGTON. D. C.

OLUFF IOULSON, 0F BRIGT-IAM, UTAH.

DRAIN-TILE MOLDER.

inaases.

Specification of Letters Patent.

Patented June 29, 1915.

Application filed February 4, 1915. Serial No. 6,046.

To all whom it may concern:

Be it known that I, OLU'FI PoULsoN, a citizen of the United States, and a resident of Brigham, in the county of Boxelder and State of Utah, have invented a new and Improved Drain-Tile Molder, of which the following is a full, clear, and exact description.

My invention relates to drain tile molders, and has reference more particularly to a mechanical molder which comprises a balanced revoluble core provided with means for packing the material inthe stationary mold, and at the same time forming an interior smooth surface as the revolving core is moved within the mold.

An object of the invention is to provide a machine for making drain tiles which is simple and efficient, the action of which is properly balanced and which is easily controlled.

With the above and other objects in view the nature of which willmore fully appear as the description proceeds, the invention consists in the novel construction and ar rangement of parts as herein fully described, illustrated and claimed.

In the accompanying drawings forming part of the application similar characters of reference indicate corresponding parts in all the views, and Figure l is a front elevation of my machine; Fig. 2 is a vertical section on line '22 of Fig. 1; Fig. 3 is a horizontal section on line 33 of Fig. 2; and Fig. i is a horizontal section on line H of Fig. 2.

Referring to the drawings, 5 is the frame of the machine in which a substantially vertical shaft 6 is mounted to rotate and reciprocate. The shaft 6 is also slidably mounted within a miter gear 7 but with which it is constrained to rotate. The miter gear 7 is in mesh with miter gears 8 and 9 of which the gear 9 is connected to the prime mover, while the gear 8 is connected to a fly wheel 10 which regulates the movement of the shaft 6. Secured to the lower extremity of thevertical shaft 6 is a core 11 which is in the shape of a projectile, the smaller end of which is connected to the shaft 6. At the lower end of the core and on the lateral surface thereof, the core is provided with diametrically opposite projections 12. The projections are in the shape of arcuate wedges, the sharper edge of which isthe attacking edge when the core is rotated. The core 11 is also provided with a pair of diametrically opposite helical blades 13 located symmetrically with respect to the projections 12, and above the same. These helical blades have their attacking edge farther away from the face of the core 11 so that they form packers for the plastic material of which the tile is to be formed. Located above the edges of the blades 13 and between the edges of the projections and the blades are pins lfi: which form the stirrers of the core.

Cooperating with the core 11 is a cylindrical mold 15 formed of two longitudinal cylindrical segments hinged together at one of their edges, and having at the other edges locking means 16, whereby the longitudinal cylindrical segments are normally prevented from parting. The frame 5 of the machine is provided with a platform or table 17 which receives the mold 15.

Fitting over the upper edge of the mold is a dished cap formed of two segments 18 and 19. The segment 19 is rigidly secured to a guide 20 which has a pair of parallel arms 21 central with the segment 19, and which arms pass through the frame 5. Each of the said arms 21 has an elongated slot 22 engaged by a bolt 23 carried by the frame. The engagement of the slots with the bolts permits a reciprocatory movement of the segment 19 toward and away from the frame, and also a swinging movement of the arms on the bolt, but prevents a side move-- ment of the segment 19. The guide 20 maintains the segment 19 in the plane with the axis of the shaft 6. Each of the arms 21 extends beyond the ends of the segment 19. To one of said extension arms a lever 24 is hinged to swing in two planes at right angles to each other. The other arm 21 has a notch adapted to engage the lever 22% at its handle. The sectionlS is in rigid connection with the lever 2-1: so that when the lever 2a is disengaged from the notch of the arm 21, the segment 18 will be raised from the upper edge of the mold and can be swung away therefrom. The segment 19 can then be removed from the upper edge of the mold by pushing the. guide 20 toward the frame 5, thus clearing the mold. The diameter of the mold or frame 15 when the same is closed is substantially that of the diameter of the blades 13 so that the same will center the mold on the table 17. The

cap has a central opening through which plastic material can be fed into the mold 15 from a trough 25 mounted obliquely above.

lars provided on the shaft which prevent a' longitudinal displacement of the yoke on the shaft although it permits a turning movement of the shaft within the yoke. The said yoke 27 is pivoted to a lever 28 whereby the shaft 6 can be raised or lowered on the frame 5 and consequently the core 11 moved in or out of the mold 15. To balance the weight of, the shaft and the core attached thereto, a counterweight 29 is adjustably attached to one end of a lever fulcrumed between its ends. The other end of said lever engages a yoke 31 attached to the upper extremity of the shaft 6. so that the same will participate in the up and down movement of the shaft but not in the turning movement thereof.

To mold a tile with my mechanical molder the core 11 is moved toward the table'17.

The sections forming the mold 16 are made to inclosethe core, whereby the same will automatically center about the said core due to the substantial equality between the diameters of the closed mold and the blades 13 of the core. The guide 20 is then pulled toward the mold and the lever 24 is brought into engagement with the notch on the arm of the guide. Thus the two segments 18 and 19 will engage the upper part of the mold and center themselves on. the mold centered by the core. The plastic material is then poured from the trough into the mold through the opening in the cap. The core is rotated and simultaneously moved upward.- The blades 13 will force the material toward the table 17 while the projections 12 will press the material against the wall of the mold and polish the inner surface. The upper edge of said projections 12 is preferably rounded so as to prevent tearing and increase the packing action of said projections. The pins 14 will stir the material in the mold previous to the same being packed by the blades 13. As the stirrers and blades of the core 11 approach the segments 18 and 19 of the cap, the'same is disengaged from the mold as previously described. Thus the way for the core is clear and the same can be withdrawn from the mold and the upper end of the tile finished. The mold 15 can then be removed with the tile therein and a new, similar mold substituted, or the. mold 15 may be opened and placed in position again, as previously described, and the action repeated.

From the foregoing description taken in connection with the accompanying drawings the advantage of the construction a'ndoperation of the device shown will be readily understood by those skilled in the art to which the invention pertains, and while I have described the principle of operation together with the apparatus which I now con'sider'to be the best embodiment thereof,

I desire to have it understood that the device shown is merely illustrative and that such changes may be made as are within the scope of the appended claims.

Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I declare that what I claim is 1. In amechanical drain tile molder, a rotary core having a pair of diametrically opposite arcuate wedges on the lateral surface of the core adjacent the bottom thereof, helical blades on the lateral surface between the wedges and above the same, and pins between the edges of the blades and wedges and above theedges of the blades.

2. In a mechanical drain tile molder, a rotary core comprising a projectile shaped body, a pair of diametrically opposite projections on the lateral surface of said body adjacent its larger end, said projections adapted to polish the plastic material within the mold when the same is rotated, a pair of helical blades on the lateral surface of the body between and above the projections and symmetrical therewith, said blades adapted to pack the plastic material within the mold, and stirring pins carried by said body above the edges of the blades and symmetrical with respect to the projections and the blades.

3. In a mechanical drain tile molder, a rotary core comprising a projectile shaped body having ad acent its larger end on. the lateral surface thereof, stirrers, packers below said stirrers and symmetrical therewith, and facers below said packers and symmetrical with said stirrers and packers.

4. In a mechanical drain tile molder, a rotary core, a cylindrical, hollow, sectional mold adapted to inclose the core, a sectional dish-shaped cap adaptedto engage one edge of the mold, means for locking the sections of the mold, and means whereby said cap sections can be moved apart and thereby disengaged from the mold edge, substantially as and for the purpose set forth.

-5. In a mechanical drain tile molder, a hollow, cylindrical, sectional mold, means for maintaining the sections together, a dish-shaped cap formed of twosections, a guide carrying one of the sections in predetermined relation with the mold, a lever carrying the other section of the cap and associated with the guide, whereby the two sections may be locked together and maintained concentric with the mold, said cap having a'central opening for admitting plastic material therethrough into the mold.

6. In a mechanical drain tile molder, a frame, a shaft mounted to rotate and reciprocate on the frame, a mold carried by the shaft, means balancing the weight of the shaft and core, a hollow, cylindrical, sectional mold adapted to encompass the core, means normally locking the sections of the mold together, a dish-shaped sectional cap adapted to engage the upper edge of the mold, a member having a pair of arms in rigid connection with one of said cap sections, said frame having means engaging the arms whereby said sections can be moved to and from the frame but prevented from moving sidewise, a lever carrying the other section of the cap and associated with the member connected to the first section whereby the two sections can be locked together on said member, said cap having a central opening, and means for feeding plastic material through said opening into the mold.

7. In a drain tile molder, a rotary core, facers on the lateral surface of said core adjacent the bottom of the core, and packers on the lateral surface of said core above said facers and symmetrical therewith.

8. In a drain tile molder, a rotary core, facers on the lateral surface of the core adjacent the bottom thereof, packers on said core above said facers, and stirrers on the core above said packers.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

. OLUFF POULSON.

Witnesses:

CARL ANDERSON, JosnPH PoULsnN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. G. 

